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    • 63. 发明授权
    • Method for detecting the illumination color of a color image from an average of chromaticity coordinates generated from linear approximations of color transition bands
    • 从色彩过渡带的线性近似生成的色度坐标的平均值中检测彩色图像的照明颜色的方法
    • US06654055B1
    • 2003-11-25
    • US09065723
    • 1998-04-24
    • Du-Sik ParkChang-yeong Kim
    • Du-Sik ParkChang-yeong Kim
    • H04N964
    • H04N1/6077H04N1/6086
    • A method for detecting the illumination color to store the color-compensated image considering the light effect of illumination environments on photographing with a color image input apparatus such as a video camera. The present invention provides a method for finding highlight areas appearing on the objects in the image and obtaining the illumination color resulting from the analysis of the color of the pixels included in those highlight areas. The chromaticity coordinates of the pixels in a highlight area occurring on the uniformly colored object are distributed between the body color of the object and the illumination color. The distribution of those chromaticity coordinates is referred to as the color transition band. The straight lines are approximated on the chromaticity diagram using these color transition bands obtained from highlight areas presenting several uniformly colored objects. The illumination color is determined as the average of the intersections between the lines. In this way, the present invention may reduce the excessive processing time found in the prior art method, providing more reliable information about the illumination color.
    • 考虑照明环境对照相机的彩色图像输入装置拍摄时的光效应来检测照明颜色以存储彩色补偿图像的方法。 本发明提供了一种用于找到出现在图像中的物体上的高光区域并获得通过对包括在那些高亮区域中的像素的颜色的分析而产生的照明颜色的方法。 出现在均匀着色的物体上的高亮区域中的像素的色度坐标分布在物体的身体颜色和照明颜色之间。 这些色度坐标的分布被称为色彩转换带。 使用从呈现几个均匀着色的对象的高亮区域获得的这些颜色过渡带,在色度图上近似直线。 照明颜色被确定为线之间的交点的平均值。 以这种方式,本发明可以减少在现有技术方法中发现的过多的处理时间,从而提供关于照明颜色的更可靠的信息。
    • 64. 发明授权
    • Image processing apparatus and method of enhancing visibility of displayed image
    • 提高显示图像的可见度的图像处理装置和方法
    • US08913194B2
    • 2014-12-16
    • US11768412
    • 2007-06-26
    • In-ji KimHyun-wook OkChang-Yeong KimDu-sik ParkYoung-ran HanWon-hee Choe
    • In-ji KimHyun-wook OkChang-Yeong KimDu-sik ParkYoung-ran HanWon-hee Choe
    • H04N5/57H04N5/58H04N5/00G06T5/00
    • G06T5/009G06T2207/10024G06T2207/20081
    • An image processing apparatus and method to reduce the deterioration of visibility of an image displayed on an image display device occurring under various lighting conditions when the brightness of ambient light is brighter than that of the image display device, and includes a sensor to sense the brightness of an external light, a unit to store a luminance-contrast model curve representing an optimal contrast value for a particular luminance for each brightness of the external light, a unit to determine a target luminance value according to the sensed brightness of the external light, to obtain a contrast value corresponding to the target luminance value with reference to the luminance-contrast model curve corresponding to the sensed brightness, and to adjust an input image to have the target luminance value and the obtained contrast value, and a unit to adjust the saturation of the adjusted input image according to the target luminance value and the obtained contrast value.
    • 一种图像处理装置和方法,用于当环境光的亮度比图像显示装置的亮度更亮时,减少在各种照明条件下发生的图像显示装置上显示的图像的可见度的劣化,并且包括用于感测亮度的传感器 外部光的单位,用于存储表示对于外部光的每个亮度的特定亮度的最佳对比度值的亮度对比度模型曲线的单元,根据感测到的外部光的亮度来确定目标亮度值的单元, 参照对应于感测到的亮度的亮度对比度模型曲线来获得与目标亮度值对应的对比度值,并且调整输入图像以具有目标亮度值和获得的对比度值,以及调整单元 根据目标亮度值和所获得的对比度值调整的输入图像的饱和度。
    • 66. 发明授权
    • Method and apparatus for bit resolution extension
    • 位分辨率扩展的方法和装置
    • US08514241B2
    • 2013-08-20
    • US11529401
    • 2006-09-29
    • Aron BaikChang-yeong KimSeong-deok Lee
    • Aron BaikChang-yeong KimSeong-deok Lee
    • G09G5/02
    • H04N19/184H04N19/126
    • A bit-resolution-extension method is provided. The resolution extension method includes normalizing n-m upper bit values of adjacent pixels based on an upper n-m bit value of each pixel of a sample image, analyzing a statistical distribution of a lower m bit value of the reference pixel by patterns of a set consisting of the normalized adjacent pixels, generating a memory address from normalized adjacent pixel values of the sample image, saving a representative value of the lower m bits by patterns to the memory address as a result of the analysis, normalizing adjacent pixel values based on each pixel value of an input image, generating the memory address from the normalized adjacent pixel value of the input image, reading a representative value of the lower m bits saved in the memory address, and adding the read lower m bits to the input image pixel values as lower bits.
    • 提供了位分辨率扩展方法。 分辨率扩展方法包括基于样本图像的每个像素的上位数值来对相邻像素的nm高位值进行归一化,通过以下方式分析参考像素的较低m位值的统计分布: 归一化的相邻像素,从采样图像的标准化相邻像素值生成存储器地址,作为分析的结果,将存储器地址中的低m位的代表值作为模式保存到存储器地址,基于每个像素值的 输入图像,从输入图像的标准化相邻像素值生成存储器地址,读取保存在存储器地址中的较低m位的代表值,并将读出的较低m位作为较低位加到输入图像像素值 。
    • 67. 发明授权
    • Image coding method and apparatus using spatial predictive coding of chrominance and image decoding method and apparatus
    • 使用色度空间预测编码和图像解码方法和装置的图像编码方法和装置
    • US08345995B2
    • 2013-01-01
    • US11882869
    • 2007-08-06
    • Woo-shik KimChang-yeong KimYang-seock Seo
    • Woo-shik KimChang-yeong KimYang-seock Seo
    • G06K9/36
    • H04N19/159G06T9/004G06T9/005H04N19/105H04N19/11H04N19/122H04N19/14H04N19/176H04N19/182H04N19/184H04N19/186H04N19/44H04N19/593H04N19/61
    • A method and apparatus for coding a chrominance component of an intra-image using spatial predictive coding and a method and apparatus for decoding the coded chrominance component are provided. The coding apparatus includes a variation calculator, which calculates a vertical variation and a horizontal variation with respect to a current block to be predictively coded among blocks having a predetermined size, into which a chrominance component of an input image is divided, using pixel values in an upper reference block adjacent to the current block and pixel values in a side reference block adjacent to the current block; a hybrid predictor, which divides the current block into a predetermined number of regions according to the vertical and horizontal variations and generates a prediction value of each pixel in each region using a pixel value in the upper reference block or a pixel value in the side reference block; a differential value generator, which generates a differential value between the prediction value and a corresponding real pixel value in the current block and codes the differential value using a predetermined coding method.
    • 提供了一种使用空间预测编码对图像内的色度分量进行编码的方法和装置,以及用于对编码的色度分量进行解码的方法和装置。 该编码装置包括:变化计算器,使用像素值计算相对于预定尺寸的块中的要被预测编码的当前块的垂直变化和水平变化,其中输入图像的色度分量被划分成 与当前块相邻的上参考块和与当前块相邻的侧参考块中的像素值; 混合预测器,其根据垂直和水平变化将当前块划分成预定数量的区域,并使用上参考块中的像素值或侧参考中的像素值生成每个区域中每个像素的预测值 块; 差分值生成器,其生成预测值与当前块中的对应的实际像素值之间的差分值,并使用预定的编码方法对差分值进行编码。